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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2019, Raspberry Pi (Trading) Limited
*
* contrast.hpp - contrast (gamma) control algorithm
*/
#pragma once
#include <atomic>
#include <mutex>
#include "../contrast_algorithm.hpp"
#include "../pwl.hpp"
namespace RPi {
// Back End algorithm to appaly correct digital gain. Should be placed after
// Back End AWB.
struct ContrastConfig {
bool ce_enable;
double lo_histogram;
double lo_level;
double lo_max;
double hi_histogram;
double hi_level;
double hi_max;
Pwl gamma_curve;
};
class Contrast : public ContrastAlgorithm
{
public:
Contrast(Controller *controller = NULL);
char const *Name() const override;
void Read(boost::property_tree::ptree const ¶ms) override;
void SetBrightness(double brightness) override;
void SetContrast(double contrast) override;
void Initialise() override;
void Prepare(Metadata *image_metadata) override;
void Process(StatisticsPtr &stats, Metadata *image_metadata) override;
private:
ContrastConfig config_;
std::atomic<double> brightness_;
std::atomic<double> contrast_;
ContrastStatus status_;
std::mutex mutex_;
};
} // namespace RPi
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